Engine ventilator



E. CURRIE.

ENGINE VENTILATOR. I APPLICATION FILED MAY 12. 1920.

Paten td Jun e120, 1922.

INVENTUB,

Fi -4 i s ATTDENEIYT UNITED STIAT EMERSON GURRIE,

ANGELES, CALIFORNIA.

ONE-HALF r0 BOTH or LOS ENGINE vEn'rILAroB.

Application filed May 12,

To all whom it may concern:

Be it known that I, EMERSON CURRIE, a citizen of the United States,residing at the city of Los Angeles, county of Los Angeles, State ofCalifornia, have invented new and useful Improvements in EngineVentilators, of which the following is a specification.

My invention relates to means for ventilatmg the crank case of aninternal combustion engine and the object thereof is to I admit air intothe crank case and to permit the escape from the crank case of theheated gases thereby cooling the cylinders.

In the drawings forming a part of this application Figure 1 is a frontelevation of my device as applied to an internal combustion engine, aportion of which is shown, the engine being that of a Ford car. Figure 2is a longitudinal central section of my device, with portions of theengine in section and other portions in elevation. Figures 3, 4 and 5are views of the several pieces of the device detached.

Referring to the drawings, 10 is the casing which covers thetransmission gears of the engine from which the usual door is removedand in its place I attach the base plate 11 of my ventilator by means ofscrews 12 which are usually used to secure the door of the case inplace. Near the lower end of plate 11 I slit the plate by a transversecut and press the upper edge of the late at the slit outwardly as bestshown in igure 2 thereby forming base plate slot 12. On the outer sideof plate 11 and secured thereto by rivets 13 is the cover 14 which is ofmetal, the central portions of which are pressed outwardly to. formbetween it and the base plate a condensing chamber 15 in which the oilvapors may be condensed and then run back into the crank case throughslot 12. To retard the flow of the vapor and to aid in condensing it Isecure to cover a sheet of wire gauze 16 Specification of LettersPatent.

Patented June 20, 1922.

1920. Serial No. 380,876.

which lies over slot 12. The upper end of the gauze preferably engagesthe base plate above the slot. I could omit the gauze but it worksbetter with it in. In the upper end of cover 14: is a transverse slit,the lower edge of which is pressed inwardly therebyv forming the coverslot 17. By this construction it will be seen that I have provided aneflicient means of ventilating the transmission case, which will permitthe heated air to pass out of and the crankcase. It will also be seenthat the passage way is provided with deflectors that will throw downany particles of liquid oil that might have a tendency to splash out,and that the vaporized oil has a chance to condense and run back intothe crank case.

Having described my invention I claim:

1. A ventilator for internal combustion engines comprising a base plateadapted to be secured upon the transmission casing, said plate havinglower end thereof, the metal forming the upper edge of the slit beingpressed outwardly to form a slot; a cover plate having the centralportions pressed outwardly secured to said base plate to cover said slotsaid cover plate bein slitted transversely near the upper end, the metalforming the lower edge of the slit being pressed in wardly to form aslot.

2. In an internal combustion engine a ventilator for the transmissioncase comprising a casing composed 'of a baseplate and a cover platesecured upon the transmission case, said casing having a slot in thebase plate near the bottom and another slot in the cover plate near thetop; and wire gauze covering the slot in the base plate.

In witness that I claim the foregoing I have hereunto subscribed my namethis 7th day of May, 1920.

EMERSON CURRIE.

cool air to pass into a transverse slit near the

